// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database()
const _ = db.command

// 云函数入口函数
exports.main = async (event, context) => {
  return await db.collection('posts_comments').doc(event.id).update({
    data: {
      childComment: _.push(event.comments)
    }
  })
}